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std::filesystem::path::generic_u8string

std：：文件系统：：path：：generic[医]String，std：：file system：：path：：genericary[医]wstring，std：：file system：：path：：genericary[医]u8字符串

template< class CharT, class Traits = std::char_traits class Alloc = std::allocator > std::basic_string generic_string( const Allocator& a = Allocator() ) const;(1)(since C++17)
​(2)(since C++17)
std::string generic_string() const;​
std::wstring generic_wstring() const;​
std::string generic_u8string() const;​
std::u16string generic_u16string() const;​
std::u32string generic_u32string() const;​

以泛型路径名格式返回内部路径名，转换为特定字符串类型。如有转换，则具体如下：

  • 如果path::value_type是char，如果有转换，则是系统依赖的。这是典型的POSIX系统%28(如linux%29)上的情况，其中本机编码为utf-8和string()不执行转换。

  • 否则，如果path::value_type是wchar_t，如果有，则未指定转换。在Windows上就是这样，其中Wchar[医]T为16位，本机编码为UTF-16。

  • 否则，如果path::value_type是char16_t，本机编码为UTF-16，转换方法未指定。

  • 否则，如果path::value_type是char32_t，本机编码为UTF-32，转换方法未指定。

大/字符用作目录分隔符。

1%29所有内存分配由a...

2%29结果编码u8string()一直都是UTF-8。

参数

a-allocator to construct the string with

类型要求

图表必须是编码字符类型%28 char，wchar[医]T，char16[医]T和char32[医]t%29

返回值

转换为指定字符串类型的通用路径名格式的内部路径名。

例外

%280%29

另见

stringwstringu8stringu16stringu32stringreturns the path in native pathname format converted to a string (public member function)

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